copper pyrites
Americannoun
noun
Etymology
Origin of copper pyrites
First recorded in 1770–80
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Calcination is only advisable for ores which contain relatively much iron pyrites and little copper pyrites.
From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" by Various
Black above, the Mimic Geotrupes is the colour of copper pyrites below; also black in all parts exposed to the light of day, the Stercoraceous Geotrupes displays a ventral surface of a glorious amethyst violet.
From The Glow-Worm and Other Beetles by Teixeira de Mattos, Alexander
This ore is often found mixed with iron or copper pyrites, and sometimes with blende.
From The Inhabitants of the Philippines by Sawyer, Frederic H.
But the same thing has been found in the feathers of certain birds whose color is metallic green, and it has been proven that such birds pick up and swallow shining bits of copper pyrites.
From In Search of the Unknown by Chambers, Robert W. (Robert William)
About Mambulao cupro-ferruginous quartz and copper pyrites are found, but are not worked.
From The Inhabitants of the Philippines by Sawyer, Frederic H.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
